/**
 *  StaDiUM - State Diagram Unified Modeler
 *  Copyright (C) 2007  Stefan Bucur, Mihai Balan, Claudiu Tanase
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  (at your option) any later version.

 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.

 *  You should have received a copy of the GNU General Public License along
 *  with this program; if not, write to the Free Software Foundation, Inc.,
 *  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 */

/**
 *  File Information
 *
 *  Last Modified On: $Date: 2007-06-02 21:30:12 +0000 (Sat, 02 Jun 2007) $
 *  Last Modified By: $Author: stefan.bucur $
 */
package ro.pub.cs.stadium.document;

import org.eclipse.swt.widgets.Display;

/**
 * @author stefan
 *
 */
public enum MeasureUnit {
	CENTIMETERS(1/2.54f),
	MILLIMETERS(1/25.4f), // The default one 
	METERS(1/0.0254f),
	INCHES(1.0f),
	PIXELS(0.0f);
	
	private float inEq;
	
	private MeasureUnit(float inEq) {
		this.inEq = inEq;
	}
	
	public static MeasureUnit getDefault() {
		return MeasureUnit.MILLIMETERS;
	}
	
	public float getXSizeInPixels(float size, Display display) {
		
		if (this == PIXELS)
			return size;
		
		org.eclipse.swt.graphics.Point dpi = display.getDPI();
		
		return dpi.x * this.inEq * size;
	}
	
	public float getYSizeInPixels(float size, Display display) {
		
		if (this == PIXELS)
			return size;
		
		org.eclipse.swt.graphics.Point dpi = display.getDPI();
		
		return dpi.y * this.inEq * size;
	}
}
